Injector



' (Model.)

\ W. B. MACK.

INJEGTOR.

No. 575,363. Patented Ja,nl9, 1897;

y INVENTUR:

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NTTED STATES PATENTV Trice.

VILLIAM B. MACK, OF BOSTON, MASSACHUSETTS.

INJ ECTO R.

SPECIFICATION forming part of Letters Patent No. 575,363, dated January 19, 1897.

Application filed December 6, 1895. Serial No. 571,225. (Model.)

To all whom t 'may concern:

Be it known that I, WILLIAM B. MACK, of Boston, in the county of Suffolk and State of l\Iassachusetts,have invented certain new and useful Improvements in Injectors, of which the following is a specification.

This invention relates to in j eetors for steamboilers, and has for its object, first, to provide an improved internal construction whereby access may be readily had thereto for the purpose of repair or renewal of parts or the removalof any obstructions that may have entered with the feed-water by a sliding movement without rotation.

Another object of my invention is the production of an injector having an improved construction of overflow-chambers to reduce the deposit of lime or scale.

The invention consists in the construction and combination of parts substantially as hereinafter described and claimed.

In the accompanying drawing the figure represents a longitudinal section of an injeetor embodying my improvements.

In general appearance this present injector resembles that shown in United States Patent No. 457,514, granted to me August ll, 1894, and in some of the details there is a similarity in construction, and such features as are well known will not be described herein, it being sufcient to describe only such as are directly connected with or have relation to the elements of novelty.

The casing a contains the combining-tube l), the cone c, the steam-nozzle CZ, and the delivery-tube c', which constitute a continuation of the combining-tube. The cone c has an integral tubular extension, forming the spindle-supporting stand j, said integral cone and stand having an enlarged section, the rear portion of which forms a shoulder c', between which and the gland f is interposed a packing-ring e.

Screw-threaded studs 7L 7L are carried by the casing and project through ears or a ange of the gland f, and nuts g g serve to secure the gland in place. By removing the nuts g g the gland can be removed and then the spindle-stand and cone, and also the nozzle d, spindle 7c, and valve l, can all be withdrawn together. The advantage of this construetion is that it enables access to be had to the interior of the casing to remove any obstructions, or for other'purposes, without relatively disarranging or separating the parts containedgin that end of the casing. l

By reference to the above-mentioned patent it will be seen that the space surrounding the delivery-cones and communicating with the overflow-valve is larger than that shown in my present invention. In the present instance the space 2, which surrounds the tube or cone c' and communicates with the overflow or starting valvem, is reduced by shortening the delivery-tubez and easing between the overflow-valve and the outer end or nozzle of the casing, and providing a partition 'n in the casing, through which the tube t passes, so that only a small space is formed leading to the overiiow-valve.v In consequ ence of this construction there is no deposit of lime or other sediment in such quantity as would be likely to injure the cones or tubes when they are being removed from the casing.

The delivery cone or tube t' is formed with an external annular rib 17 which is clamped between a shoulder a of the casing and a shoulder o' of the tip or nozzle o when the latter is in place. By unscrewing the nozzle o the delivery cone or tube 'L' can be removed at that end of the injector.

The water-inlet p has an inclined partition p', provided with a seat for the valve q, thus providing for a direct flow of water to the combining-tube when the valve is open without deflection or change in the direction of flow.

Having now described my invention, what I claim isl. In an injector, the combination with the casing a, of the cone c and valve-stand jA C. F. BROWN, A. W. HARRISON. 

